学进去-教育应平等而普惠
试题
类型:听音判断
难度系数:0.65
所属科目:小学英语
听录音,根据短文内容判断,正确写“T”,错误写“F”。
(        ) 1. Bill is from America, and he lives in New York now.
(        ) 2. Bill is a boy. He is 13.
(        ) 3. Bill likes music and football.
(        ) 4. Bill’s mother is a teacher and his father is a worker.
(        ) 5. Bill is older than his sister.
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19
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